/* =========================================================
   site.css  (Site Framework)
   - 共通：タイポ / Header / Nav / Dropdown / Burger / Backdrop
   - 共通：Reveal（is-inview） / Underline（is-underline）
   - 共通：Footer / 共通ボタン
   - 方針A：--vw/--vh を “JS実測” で上書き（CSS側はデフォルト値を持つ）
========================================================= */

:root{
  --blue:#0ea5e9;
  --ink:#111827;
  --paper:#fff;

  /* underline */
  --uline-from:#7fb6ff;
  --uline-to:#195aa6;

  /* page base（各ページCSSで上書き可） */
  --page-bg:#0a1320;
  --page-fg:#e8f0f8;

  /* header/nav */
  --header-bg: rgba(14,165,233,.50);
  --header-border: rgba(255,255,255,.15);
  --nav-hover: rgba(255,255,255,.12);
  --nav-chip: rgba(255,255,255,.16);
  --nav-chip-border: rgba(255,255,255,.24);

  /* dropdown */
  --dropdown-bg: rgba(14,165,233,.50);
  --dropdown-border: rgba(255,255,255,.18);

  /* backdrop */
  --backdrop: rgba(0,0,0,.58);
  --backdrop-sp: rgba(0,0,0,.64);

  /* =====================================================
     Viewport vars (fallback)
     - site.js が上書きする前提だが、未適用時も破綻しない保険
  ===================================================== */
  --vw: 1vw;
  --vh: 1vh;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }

/* ★iOS含む横はみ出しの最後の砦（bodyだけだとSafariで漏れることがある） */
html{ overflow-x:hidden; }

body{
  margin:0;
  background: var(--page-bg);
  color: var(--page-fg);

  font-family:
    "Inter",
    "IBM Plex Sans JP",
    ui-sans-serif,
    system-ui,
    -apple-system,
    "Segoe UI",
    "Yu Gothic UI",
    "Hiragino Sans",
    "Yu Gothic",
    "Meiryo",
    sans-serif;

  font-size:16px;
  line-height:1.7;
  letter-spacing:.015em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: geometricPrecision;

  overflow-x:hidden;
}

img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; }
.body-lg{ font-size:17px; line-height:1.9; }

/* ===== Typography role classes ===== */
.section-headline{
  font-size: clamp(20px, 2.0vw, 24px);
  font-weight:700;
  line-height:1.5;
  letter-spacing:.02em;
}

/* ===== Underline（基本） ===== */
.section-title{
  position: relative;
  padding-bottom: 12px;
}
.section-title::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  height:2px;
  width:0;
  border-radius:2px;
  background: linear-gradient(to right, var(--uline-from), var(--uline-to));
  transition: width .9s ease;
}
.section-title.is-underline::after{ width:100%; }
.section-title--textwidth{ display:inline-block; }

/* ダークカード用（色だけ差し替え）※併用前提 */
.section-title--darkline::after{
  background: linear-gradient(
    to right,
    rgba(245,241,232,.65),
    rgba(255,255,255,.98)
  );
}

/* 互換：global-headline */
.global-headline{
  position:relative;
  padding-bottom:12px;
}
.global-headline::after{
  content:"";
  position:absolute;
  left:0; bottom:0;
  height:2px;
  width:0;
  border-radius:2px;
  background: linear-gradient(to right, var(--uline-from), var(--uline-to));
  transition: width .9s ease;
}
.global-headline.is-underline::after{ width:100%; }

/* =========================================================
   Header / Nav / Dropdown / Burger / Backdrop
========================================================= */
.site-header{
  position: fixed; left:0; right:0; top:0; height:64px;
  z-index: 50000;
  display:flex; align-items:center;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  backdrop-filter: saturate(120%) blur(4px);
  -webkit-backdrop-filter: saturate(120%) blur(4px);

  opacity:0;
  transform: translateY(-14px);
  transition: opacity 1.7s ease, transform 1.7s cubic-bezier(.2,.8,.2,1);
}
body.header-visible .site-header{ opacity:1; transform:none; }

.nav{
  width:100%; max-width:1200px; margin:0 auto; padding:0 20px;
  display:flex; align-items:center; justify-content:space-between; height:64px;
}
.logo{
  display:flex; align-items:center; gap:.6rem;
  font-weight:800; letter-spacing:.02em; text-decoration:none; color:#f6fbff;
}
.logo-dot{ width:10px; height:10px; border-radius:50%; background:linear-gradient(135deg, #0ea5e9, #22d3ee); }

/* Desktop base */
.site-nav{ position: relative; }
.main-nav{
  display:flex; gap:1rem; list-style:none; margin:0; padding:0;
  align-items:center;
}
.site-header nav a{
  color:#f6fbff; text-decoration:none; font-weight:600;
  padding:.45rem .7rem; border-radius:10px;
  transition: background-color .2s ease, opacity .2s ease;
}
.site-header nav a:hover{ background: var(--nav-hover); }
.site-header nav a.chip{ background: var(--nav-chip); border:1px solid var(--nav-chip-border); }
.site-header nav a.chip:hover{ background: rgba(255,255,255,.22); }

/* Dropdown */
.has-dropdown{ position: relative; }
.nav-item{ display:flex; align-items:center; border-radius:10px; }
.nav-toplink{ display:inline-flex; align-items:center; }

.nav-dropdown-toggle{
  appearance:none;
  border:0;
  background: transparent;
  color:#f6fbff;
  padding:.45rem .55rem;
  border-radius:10px;
  cursor:pointer;
  transition: background-color .2s ease;
  display:inline-flex; align-items:center; justify-content:center;
}
.nav-dropdown-toggle:hover{ background: var(--nav-hover); }

.nav-caret{
  width:10px; height:10px; display:inline-block;
  border-right:2px solid rgba(255,255,255,.88);
  border-bottom:2px solid rgba(255,255,255,.88);
  transform: rotate(45deg);
  margin-top:-2px;
}

.dropdown{
  position:absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  list-style:none;
  margin:0;
  padding:10px;
  border-radius:14px;

  background: var(--dropdown-bg);
  border: 1px solid var(--dropdown-border);
  backdrop-filter: saturate(120%) blur(6px);
  -webkit-backdrop-filter: saturate(120%) blur(6px);
  box-shadow: 0 18px 40px rgba(0,0,0,.35);

  opacity:0;
  transform: translateY(8px);
  pointer-events:none;
  transition: opacity .22s ease, transform .22s ease;
  z-index: 50010;
}
.dropdown::before{
  content:"";
  position:absolute;
  left:0; right:0;
  top:-10px;
  height:10px;
}
.has-dropdown.is-open > .dropdown{
  opacity:1;
  transform: translateY(10px);
  pointer-events:auto;
}
.dropdown a{
  display:block;
  padding:.55rem .7rem;
  border-radius:10px;
  font-weight:700;
  color:#f6fbff;
  text-decoration:none;
  white-space:nowrap;
}
.dropdown a:hover{ background: rgba(255,255,255,.14); }

/* Hamburger (SP) */
.nav-burger{
  display:none;
  width:42px; height:42px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.22);
  background: rgba(255,255,255,.10);
  backdrop-filter: saturate(120%) blur(4px);
  -webkit-backdrop-filter: saturate(120%) blur(4px);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  z-index: 50020;
  padding:0;
  flex-direction: column;
  gap: 5px;
}
.nav-burger__line{
  display:block;
  width:22px;
  height:2px;
  background: rgba(255,255,255,.92);
  border-radius:2px;
}

/* Backdrop */
.nav-backdrop{
  position: fixed;
  inset: 0;
  z-index: 49980;
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease;
  background: var(--backdrop);
}
body.nav-dim .nav-backdrop{
  opacity: 1;
  pointer-events: auto;
}
body.nav-dim{ overflow: hidden; }

.nav-panel{ display: contents; }

@media (max-width: 960px){
  .nav-backdrop{ background: var(--backdrop-sp); }
  .nav-burger{ display:flex; }

  .nav-panel{
    position: fixed;
    top: 76px;
    right: 16px;
    left: 16px;

    display:block;
    z-index: 50006;

    background: var(--dropdown-bg);
    border: 1px solid var(--dropdown-border);
    border-radius: 18px;

    backdrop-filter: saturate(120%) blur(8px);
    -webkit-backdrop-filter: saturate(120%) blur(8px);
    box-shadow: 0 20px 44px rgba(0,0,0,.45);

    padding: 12px;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
  }

  .site-nav.is-open .nav-panel{
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .main-nav{
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .site-header nav a{
    display:block;
    width:100%;
    padding: .62rem .8rem;
  }

  .nav-item{ justify-content: space-between; gap: 8px; }

  .dropdown{
    position: static;
    top:auto; left:auto;
    min-width: unset;
    margin: 6px 0 0;
    opacity:1; transform:none;
    pointer-events:auto;
    display:none;
    box-shadow: none;
    border-radius: 14px;
  }
  .has-dropdown.is-open > .dropdown{ display:block; }
  .dropdown a{ padding: .55rem .75rem; }
}

/* ===== Reveal ===== */
.reveal-up{
  opacity:0;
  transform: translateY(14px);
  transition: opacity .8s ease, transform .8s ease;
  will-change: opacity, transform;
}
.reveal-up.is-inview{ opacity:1; transform:none; }

/* ===== Footer ===== */
.site-footer-min{
  background: linear-gradient(180deg, #285a9b 0%, #1c3e6a 100%);
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 40px 20px 64px;
  color:#f6fbff;
  font-size:14px;
  line-height:1.6;
}
.footer-min-inner{
  max-width:1100px;
  margin:0 auto;
  display:grid;
  justify-items:center;
  row-gap:12px;
}
.footer-min-logo{
  display:flex;
  align-items:center;
  gap:.6rem;
  font-weight:800;
  font-size:15px;
  letter-spacing:.05em;
  color:#ffffff;
}
.footer-min-dot{
  width:10px; height:10px; border-radius:50%;
  background:linear-gradient(135deg, #0ea5e9, #22d3ee);
}
.footer-min-name{ color:#ffffff; }
.footer-min-copy{
  color:#d7e1ee;
  font-size:13px;
  line-height:1.5;
  text-align:center;
}
.footer-min-br{ display:none; }
@media (max-width: 560px){
  .footer-min-br{ display:block; }
}

/* ===== Common buttons ===== */
.contact-cta-button{
  display:inline-block; position:relative; z-index:1; overflow:hidden;
  padding:14px 32px; border-radius:28px;
  font-weight:700; letter-spacing:.03em; text-decoration:none;
  transition:.3s; line-height:1.4;
  border:2px solid rgba(255,255,255,.85);
  color:#ffffff; background: transparent;
}
.contact-cta-button::before{
  content:""; position:absolute; top:0; right:-60px; z-index:-1;
  width:100%;
  border-right:60px solid transparent;
  border-bottom:60px solid rgba(255,255,255,.95);
  transform: translateX(-100%); transition: transform ease .3s;
}
.contact-cta-button:hover{ color:#0e5ea6; }
.contact-cta-button:hover::before{ transform: translateX(0); }

.contact-cta-button--ghost{ border-color: rgba(255,255,255,.85); color:#ffffff; }
.contact-cta-button--primary{
  border:2px solid var(--blue);
  color:#ffffff;
  background: var(--blue);
}
.contact-cta-button--primary::before{ border-bottom-color:#ffffff; }
.contact-cta-button--primary:hover{
  color: var(--blue);
  background:#ffffff;
  border-color: var(--blue);
}

/* ===== Floating Banner (shared) ===== */
.float-banner{
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 36010;

  display: grid;
  grid-auto-flow: column;
  align-items: center;
  gap: 10px;

  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .35s ease, transform .35s cubic-bezier(.2,.8,.2,1);
}

/* 表示したいページだけ body にクラスを付ける */
body.has-float-banner .float-banner{
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.float-banner__card{
  display: grid;
  align-content: center;
  text-decoration: none;
  color: #f6fbff;

  border-radius: 16px;
  padding: 22px 16px;
  min-width: min(420px, calc(100vw - 120px));
  min-height: 110px;

  background: url("../images/banner01.jpg") center/cover no-repeat;
  border: 0;

  box-shadow:
    18px 20px 44px rgba(0,0,0,.45),
    0 10px 26px rgba(0,0,0,.28);

  position: relative;
  overflow: hidden;
}
.float-banner__card::after{
  content:"";
  position:absolute;
  inset:0;
  z-index: 1;
  background: rgba(14,165,233,0.34);
}
.float-banner__card::before{
  content:"";
  position:absolute;
  inset:-60% -40%;
  z-index: 2;
  background:
    repeating-linear-gradient(
      135deg,
      rgba(255,255,255,.06) 0,
      rgba(255,255,255,.06) 10px,
      rgba(255,255,255,0) 10px,
      rgba(255,255,255,0) 26px
    );
  opacity:.16;
  pointer-events:none;
}
.float-banner__text{
  margin:0;
  font-weight:800;
  letter-spacing:.01em;
  line-height:1.35;
  text-shadow: 0 2px 12px rgba(0,0,0,.25);
  position: relative;
  z-index: 3;
}
.float-banner__close{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.18);

  background: rgba(0,0,0,.18);
  color: rgba(255,255,255,.92);

  cursor: pointer;
  box-shadow: 0 16px 34px rgba(0,0,0,.35);
}
.float-banner__close:hover{ background: rgba(0,0,0,.24); }

@media (max-width: 640px){
  .float-banner{
    right: 12px;
    bottom: 12px;
    gap: 8px;
  }
  .float-banner__card{
    min-width: min(360px, calc(100vw - 108px));
    padding: 22px 14px;
    border-radius: 16px;
    min-height: 120px;

    box-shadow:
      14px 16px 38px rgba(0,0,0,.45),
      0 8px 22px rgba(0,0,0,.28);
  }
  .float-banner__text{ font-size: 16px; }
  .float-banner__close{
    width: 36px;
    height: 36px;
    border-radius: 12px;
  }
}
.float-banner.is-hidden{ display:none !important; }

.float-banner__text{
  margin:0;
  font-weight:900;
  letter-spacing:.02em;
  line-height:1.15;
  position: relative;
  z-index: 3;

  /* ★より目立つ */
  font-size: clamp(16px, 2.2vw, 22px);

  /* ★濃く大きい影（読みやすさ優先） */
  text-shadow:
    0 4px 22px rgba(0,0,0,.72),
    0 2px 10px rgba(0,0,0,.58);
}